CS Extension

This input is used in derivation

Notes

**Note 1**: "Multiple (satellite) nodules/tumors" include satellitosis, multifocal tumors, and intrahepatic metastases. **Note 2**: Major vascular invasion is defined as invasion of the branches of the main portal vein (right or left portal vein, not including sectoral or segmental branches) or as invasion of one or more of the three hepatic veins (right, middle, or left). Invasion of the hepatic artery or vena cava is coded to 660. **Note 3**: Extension to gallbladder is not considered in AJCC staging for intrahepatic bile ducts but does affect Summary Stage. Use appropriate combination codes when gallbladder is involved. **Note 4**: All tumors with a periductal infiltrating growth pattern, a diffuse longitudinal growth pattern along the bile duct, are considered T4 by AJCC. For tumors with periductal infiltrating growth pattern, code the most specific information available about the extent of the tumor in CS Extension, and code periductal infiltrating growth pattern in CS Site-Specific Factor 10.

Default

999

NAACCR Item

NAACCR #2810

Code	Description	AJCC 7 T	AJCC 6 T	Summary Stage 1977 T	Summary Stage 2000 T
000	In situ, intraepithelial, noninvasive	Tis	TX	IS	IS
100	Single lesion in one lobe of liver WITHOUT intrahepatic vascular invasion, including vascular invasion not stated	Extension Periductal Invasion AJCC7	T1	L	L
120	Single lesion in more than one lobe of liver (contiguous growth) WITHOUT vascular invasion, including vascular invasion not stated	Extension Periductal Invasion AJCC7	T1	RE	RE
140	Extension to gallbladder, extent within liver not stated	Extension Periductal Invasion AJCC7	T1	RE	RE
160	140 + (100 or 120) Extension to gallbladder plus single lesion in one or more lobes of liver (contiguous growth) WITHOUT vascular invasion	Extension Periductal Invasion AJCC7	T1	RE	RE
170	Stated as T1 with no other information on extension	Extension Periductal Invasion AJCC7	T1	L	L
200	Single lesion in one lobe of liver WITH intrahepatic vascular invasion	Extension Periductal Invasion AJCC7	T2	L	L
220	Single lesion in more than one lobe of liver (contiguous growth) WITH vascular invasion	Extension Periductal Invasion AJCC7	T2	RE	RE
240	(200 or 220) + 140 Single lesion in one or more lobes of liver (contiguous growth) WITH vascular invasion plus extension to gallbladder	Extension Periductal Invasion AJCC7	T2	RE	RE
250	Single tumor WITH major vascular invasion: major branch(es) of portal or hepatic vein(s) (See Note 2)	Extension Periductal Invasion AJCC7	T3	RE	RE
260	250 + 140 Single tumor with major vascular invasion plus extension to gallbladder	Extension Periductal Invasion AJCC7	T3	RE	RE
270	Stated as T2a with no other information on extension	Extension Periductal Invasion AJCC7	T2	L	L
300	Multiple (satellite) nodules/tumors in one lobe of liver WITHOUT intrahepatic vascular invasion, including vascular invasion not stated	Extension Periductal Invasion AJCC7	Extension Size AJCC6	L	L
400	Multiple (satellite) nodules/tumors in one lobe of liver( WITH intrahepatic vascular invasion	Extension Periductal Invasion AJCC7	Extension Size AJCC6	L	L
420	(300 or 400) + 140 Multiple (satellite) nodules/tumors in one lobe of liver WITH or WITHOUT intrahepatic vascular invasion plus extension to gallbladder	Extension Periductal Invasion AJCC7	Extension Size AJCC6	RE	RE
450	Multiple (satellite) nodules/tumor(s) WITH major vascular invasion: major branch(es) of portal or hepatic vein(s) (See Note 2)	Extension Periductal Invasion AJCC7	T3	RE	RE
455	450 + 140 Multiple (satellite) nodules/tumor(s) with major vascular invasion plus extension to gallbladder	Extension Periductal Invasion AJCC7	T3	RE	RE
460	Multiple (satellite) nodules/tumors in more than one lobe of liver Satellite nodules, NOS	Extension Periductal Invasion AJCC7	Extension Size AJCC6	D	RE
465	460 + 140 Multiple (satellite) nodules/tumors in more than one lobe of liver plus extension to gallbladder	Extension Periductal Invasion AJCC7	Extension Size AJCC6	D	RE
470	(460 or 465) + any of (250, 260, 450, 455)	Extension Periductal Invasion AJCC7	T3	D	RE
475	Stated as T2b with no other information on extension	Extension Periductal Invasion AJCC7	T2	L	L
480	Stated as T2 [NOS] with no other information on extension	Extension Periductal Invasion AJCC7	T2	L	L
500	Confined to liver, NOS Localized, NOS	Extension Periductal Invasion AJCC7	T1	L	L
510	OBSOLETE DATA RETAINED AND REVIEWED V0203 See code 120 and 160 More than one lobe involved by contiguous growth (single lesion) WITHOUT vascular invasion, including vascular invasion not stated	Extension Periductal Invasion AJCC7	T1	RE	RE
520	OBSOLETE DATA RETAINED AND REVIEWED V0203 See code 220 and 240 More than one lobe involved by contiguous growth (single lesion) WITH vascular invasion	Extension Periductal Invasion AJCC7	T2	RE	RE
530	OBSOLETE DATA CONVERTED V0203 See code 140 Extension to gallbladder, extent within liver not stated	ERROR:	ERROR:	ERROR:	ERROR:
540	OBSOLETE DATA CONVERTED V0203 See code 160 Extension to gallbladder 530 + (100 or 510)	ERROR:	ERROR:	ERROR:	ERROR:
545	OBSOLETE DATA CONVERTED V0203 See code 170 Stated as T1 [NOS]	ERROR:	ERROR:	ERROR:	ERROR:
550	OBSOLETE DATA CONVERTED V0203 See code 240 Extension to gallbladder 530 + (200 or 520)	ERROR:	ERROR:	ERROR:	ERROR:
560	OBSOLETE DATA CONVERTED V0203 See code 420 Extension to gallbladder 530 + (300 or 400)	ERROR:	ERROR:	ERROR:	ERROR:
570	OBSOLETE DATA CONVERTED V0203 See code 480 Stated as T2 [NOS] with no other information on extension	ERROR:	ERROR:	ERROR:	ERROR:
580	Extrahepatic bile ducts	Extension Periductal Invasion AJCC7	T4	RE	RE
590	OBSOLETE DATA CONVERTED V0203 See code 270 Stated as T2a with no other information on extension	ERROR:	ERROR:	ERROR:	ERROR:
620	580 + (460 or 465) Extrahepatic bile ducts plus satellite nodules in more than one lobe or multiple tumors with major vascular invasion	Extension Periductal Invasion AJCC7	T4	D	RE
630	OBSOLETE DATA RETAINED V0200 See codes 631 and 632 Major vascular invasion: major branch(es) of portal or hepatic vein(s) (see Note 2)	ERROR:	T3	RE	RE
631	OBSOLETE DATA REVIEWED V0203 See codes 250 and 260 Single tumor with major vascular invasion: major branch(es) of portal or hepatic vein(s) (see Note 2)	Extension Periductal Invasion AJCC7	T3	RE	RE
632	OBSOLETE DATA REVIEWED V0203 See codes 450, 455, and 470 Multiple tumor(s) with major vascular invasion: major branch(es) of portal or hepatic vein(s) (see Note 2)	Extension Periductal Invasion AJCC7	T3	RE	RE
640	Direct extension/perforation of visceral peritoneum	Extension Periductal Invasion AJCC7	T4	RE	RE
643	640 + (460, 465, 470)	Extension Periductal Invasion AJCC7	T4	D	D
645	Multiple (satellite) nodules on surface of liver parenchyma	Extension Periductal Invasion AJCC7	T4	D	D
650	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 460, 465, 470, 620, 643, and 645 Multiple (satellite) nodules/tumors in more than one lobe of liver or on surface of parenchyma Satellite nodules, NOS	Extension Periductal Invasion AJCC7	Extension Size AJCC6	D	RE
655	OBSOLETE DATA CONVERTED V0203 See code 475 Stated as T2b with no other information on extension	ERROR:	ERROR:	ERROR:	ERROR:
660	Extension to hepatic artery or vena cava	Extension Periductal Invasion AJCC7	T4	RE	RE
665	660 + (460, 465, 470)	Extension Periductal Invasion AJCC7	T4	D	RE
670	OBSOLETE DATA RETAINED V0200 See code 675 650 + 630	ERROR:	T3	D	RE
675	OBSOLETE DATA REVIEWED V0203 See codes 470, 643, and 665 650 + (631 or 632)	Extension Periductal Invasion AJCC7	T3	D	RE
700	Diaphragm	Extension Periductal Invasion AJCC7	T4	RE	RE
750	OBSOLETE DATA RETAINED AND REVIEWED V0204 Perforation of visceral peritoneum included in 2 codes in CSv2: V0201, V0202. Any cases coded 750 for perforation of visceral peritoneum in V0201, V0202 should be recoded to 640. See codes 640, 755. The V0201, V0202 definition for code 750 is restored here. Code 750 did not include perforation of visceral peritoneum in V0203. Any cases coded 750 in V0203 should be recoded to 755. Lesser omentum Ligament(s): Coronary Falciform Hepatoduodenal Hepatogastric Round (of liver) Triangular Perforation of visceral peritoneum Parietal peritoneum	Extension Periductal Invasion AJCC7	T4	RE	RE
755	Lesser omentum Ligament(s): Coronary Falciform Hepatoduodenal Hepatogastric Round (of liver) Triangular Parietal peritoneum	Extension Periductal Invasion AJCC7	T4	RE	RE
760	OBSOLETE DATA RETAINED V0200 See code 765 (650 or 670) + any of [(640) or (660) or (700) or (750)]	ERROR:	T4	D	RE
765	OBSOLETE DATA REVIEWED V0203 See codes 643, 665, 770 (650 or 675) + any of [(640) or (660) or (700) or (750)]	Extension Periductal Invasion AJCC7	T4	D	RE
770	(700 or 750) + (460, 465, 470)	Extension Periductal Invasion AJCC7	T4	D	RE
780	Stated as T3 with no other information on extension	Extension Periductal Invasion AJCC7	T3	RE	RE
800	Further contiguous extension: Pancreas Pleura Stomach Other contiguous extension	Extension Periductal Invasion AJCC7	T4	D	D
850	OBSOLETE DATA REVIEWED AND CHANGED V0203 See Note 4 and CS Site-Specific Factor 10 code 010 Tumor(s) with periductal invasion Diffuse periductal infiltrating tumor	ERROR:	ERROR:	ERROR:	ERROR:
855	Stated as T4 with no other information on extension	T4	T1	L	L
950	No evidence of primary tumor	T0	T0	U	U
999	Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record	Extension Periductal Invasion AJCC7	TX	U	U

- For CS Extension codes 100-520, 580, 620, 631-650, 660-665, 675-755, 765-800, and 999 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Site-Specific Factor 10, as shown in the Extension Periductal Invasion AJCC 7 Table for this schema. - For CS Extension codes 300, 400, 420, 460, 465, 560, and 650 ONLY, the T category for AJCC 6 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size AJCC 6 Table for this schema.